38 TP-7091 4/23
Battery Description
Starting batteries are usually the lead-acid type. Use a 12-volt group 51 battery with a minimum rating of 500 cold cranking amps
at 0°F. The generator set uses a negative ground with a 12-volt engine electrical system. See Figure 26 for battery connections.
Make sure that the battery is correctly connected and the terminals are tight.
Note:
The generator set will not start and circuit board damage may occur if the battery is connected in reverse.
Figure 26 Typical Battery Connection
See the dimension drawing in the Drawings and Diagrams section for the engine starting battery location on the air intake side
of the generator set. Standard battery cables provide easy connection to the battery.
Use the following procedure to install and connect the battery.
Battery Installation Procedure
1. Ensure that the starting battery is fully charged before placing the battery in service.
2. Clean the battery posts and/or adapters if necessary.
3. Install the battery post adapters, if needed.
4. Place the battery in the housing.
5. Connect the positive (+) lead to the engine starting battery.
6. Connect the negative (- ) lead to the engine starting battery.
Refer to the generator set operation manual and the battery manufacturer’s instructions for battery maintenance instructions.
When power is applied to the RDC2 controller (that is, when the battery is connected), you will be prompted to set the date and
time, and then to set the exerciser. See the Set the Exerciser section and the generator set operation manual for instructions.
If the battery is disconnected for service or replacement, the exercise settings on the RDC2 controller are lost. Set the exerciser
after installing and connecting the battery. See the Set the Exerciser section.
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